Abstract
A numerical simulation is performed to study the far-field diffraction properties of planar diamond
waveguides. The far-field intensity distributions of a planar air waveguide and a diamond waveguide with
different distances are given by numerical calculations. In the experiment, the diffraction patterns on the
screen with different distances are recorded using a He-Ne laser as the light source, wherein the laser beam
is coupled with and propagates in the diamond waveguide. The simulation results are found to be consistent
with the experimental ones.
© 2014 Chinese Optics Letters
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